Home / 9,989.44-13,785.28-5,513.64

Finding the Fourth Proportional to 9,989.44, 13,785.28 and 5,513.64

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Solution

The fourth proportional to 9,989.44, 13,785.28 and 5,513.64 is: 7,608.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,989.44 : 13,785.28 = 5,513.64 : x
  2. Step 2: Convert to fraction form
    9,989.44/13,785.28 = 5,513.64/x
  3. Step 3: Cross multiply
    9,989.44x = 13,785.28 × 5,513.64
  4. Step 4: Simplify right side
    9,989.44x = 76,007,071.22
  5. Step 5: Solve for x
    x = 76,007,071.22/9,989.44
  6. Step 6: Final answer
    x = 7,608.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.